FIELD: aircraft manufacture; coupling of parts, for example, center-wing section and detachable part of wing, fuselage with fin and interconnecting parts of pylon. SUBSTANCE: contour joint includes parts of pylon to be connected; each part has two flanged units located on pylon spars and ribs interconnecting the parts of pylon by means of bolts. Flanged units of joint of one part of pylon are provided with guide pins, at least one per unit; flanged units of other part of pylon are provided with locking washers located coaxially relative to guide pins. Guide pins have different length; they have starting cone and cylindrical neck. Group of bolts connecting the flanged units of spar joint are located at maximum distance from each other along longitudinal axis of aircraft at spaced relation in holes, thus ensuring work of bolts for tension only. Bolts located along longitudinal axis of aircraft on caps of coupling ribs have maximum clearances in holes working in shearing. EFFECT: enhanced strength and reliability of joint; facilitated coupling procedure. 4 dwg
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